Crude oil prices held to their $105-to-$108 price range as tensions eased in the Middle East over Iran\'s alleged nuclear weapons program. Iran is reportedly exporting 1.9 million barrels per day compared to 2.6 million per day in November and is signaling a willingness to negotiate. Saudi Arabia has said it would raise production by 2.5 million barrels per day, if need be, to keep prices stable. May delivery West Texas Intermediate light sweet crude added 0.01 to $106.88 per barrel. Home heating oil added 1.44 cents to $3.2391 per gallon. Reformulated gasoline added 1.73 cents to $3.3862 per gallon. Henry Hub natural gas prices lost 2.9 cents to $2.246 per million British thermal units. The national average price of unleaded gasoline reached $3.897 per gallon Monday, up from Sunday\'s $3.894, AAA said.